California

Patent attorneys in California

California hosts 9,567 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in California. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include Cooley LLP, Quinn Emanuel Urquhart Oliver & Hedyes LLP, and Snell & Wilmer L.L.P..

Top cities in California

All practitioners in California

Timothy H Briggs

Reg. 32199

Patent attorney

Palm Desert, CA · 92260

818-531-5730

Todd M Briggs

Reg. 44040

Patent attorney

Quinn Emanuel Urquhart Oliver & Hedyes LLP

Redwood Shores, CA · 94065

650-801-5000

Matthew J Brigham

Reg. 44047

Patent attorney

Cooley LLP

Palo Alto, CA · 94304

650-843-5000

Alexandra M Bright

Reg. 56512

Patent agent

Los Angeles, CA · 90064

310-839-5410

Cassandra Kay Bright

Reg. 66413

Patent agent

Camarillo, CA · 93011

805-758-5406

Christopher D Bright

Reg. 46578

Patent attorney

Snell & Wilmer L.L.P.

Costa Mesa, CA · 92626

714-427-7069

Earl A Bright· II

Reg. 37045

Patent attorney

ExploraMed

Mountain View, CA · 94040

650-472-0307

Patrick F Bright

Reg. 24318

Patent attorney

Wagner, Anderson & Bright, PC

Los Angeles, CA · 90064

213-700-6637

David R Brightman

Reg. 47445

Patent attorney

Yahoo!

Sunnyvale, CA · 94089

408-349-7292

Jeffrey Brill

Reg. 51198

Patent attorney

Brill Law Office

Cupertino, CA · 95014-2358

408-973-7210

Kurt L Brillhart

Reg. 64757

Patent agent

Mission Viejo, CA · 92691

949-697-2818

Thomas J Brindisi

Reg. 40348

Patent attorney

Orbit IP, LLP

Los Angeles, CA · 90024

213-716-4370

Achim Brinker

Reg. 62991

Patent attorney

San Mateo, CA · 94403

619-398-6322

Timothy A Brisson

Reg. 44046

Patent attorney

Auburn, CA · 95603

Christopher J Brittain

Reg. 67497

Patent agent

Schwegman Lundberg & Woessner, P.A.

San Jose, CA · 95113

612-373-6900

Candace S Britton

Reg. 79013

Patent agent

Cooley LLP

Palo Alto, CA · 94304-1130

650-543-5000

Irina E Britva

Reg. 50498

Patent agent

Jones Day

San Diego, CA · 92121

858-314-1142

Thomas Warner R. Broaddus

Reg. 41638

Patent attorney

San Diego, CA · 92104

619-281-9221

Brenna Alana Brock

Reg. 48509

Patent attorney

San Diego, CA · 92102

512-569-2093

Joe Allen Brock· II

Reg. 46021

Patent attorney

Patent Venture Group

Rancho Cucamonga, CA · 91730

909-758-5145

Olivia Brock

Reg. 82530

Patent agent

Haley Guiliano LLP

San Jose, CA · 95113

669-213-1050

Paul S. Brockland

Reg. 61130

Patent attorney

Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.

San Diego, CA · 92130

858-314-1524

Katherine Schon Brockway

Reg. 65980

Patent attorney

Latham & Watkins LLP

Menlo Park, CA · 94025

650-328-4600

James P Broder

Reg. 43514

Patent attorney

Roeder & Broder LLP

San Diego, CA · 92116

858-635-2142

Christopher Peter Broderick

Reg. 41639

Patent attorney

Manatt, Phelps & Phillips

Los Angeles, CA · 90064

310-312-4000

Daniel F Broderick

Reg. 39122

Patent agent

Jet Propulsion Laboratory

Pasadena, CA · 91109

818-354-1314

Keith J Brodie

Reg. 48414

Patent agent

Yorba Linda, CA · 92886

714-900-3141

Anne Y. Brody

Reg. 54612

Patent attorney

Gibson, Dunn & Crutcher LLP

Irvine, CA · 92612-4412

949-451-4192

Tom Brody

Reg. 46433

Patent agent

Alameda, CA · 94501

510-864-1996

Julien P Brohan

Reg. 74745

Patent agent

Los Angeles, CA · 90068

213-663-7173

Common questions

Do I need a patent attorney based in California?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a California-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in California?

9,567 active USPTO-registered patent practitioners list a California office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.